Category: Administration / Server

Zehntausende Mail-Server wegen Exchange-Lücke gehackt – Cloud oder Klaut – com-magazin.de Security Newsletter
12.03.2021

scroll down to ENGLISH “Zehntausende Mail-Server wegen Exchange-Lücke gehackt.  Wegen einer vor wenigen Tagen bekanntgewordenen Sicherheitslücke sind laut US-Medienberichten Zehntausende E-Mail-Server von Unternehmen, Behörden und Bildungseinrichtungen Opfer von Hacker-Attacken geworden. “Deutsche Unternehmen sind im internationalen Vergleich besonders stark von dieser […]

phpBB – Profile Avatar Picture 6KBytes size limit
17.02.2021

… because one also cares about beauty… a default avatar picture is not an option… but phpBB has a very strict 6KBytes max file size limit for Profile Avatar Pictures…  which is almost impossible to reach with format.jpg or format.png […]

GNU Linux – how to mount single disk failed RAID1
23.01.2021

for some reason… did ext3 on RAID1 with two disks (seagate + wd) of different sized (2TB but they (of course) are not not exactly 2TB) not sure where the problem here was 1) kernel 2) ext3 3) the disks… […]

LibreBoot – (how to mount luks2 encrypted volume) LVM encrypted volumes needs correct CMOS clock time – Volume Group not found – failed to read int token error parsing metadata
03.12.2020

to recover the data: how to mount luks2 encrypted volume possibility: remove harddisk, attach to sata2usb adapter, then mount on different machine like this: # unlock encrypted harddisk udisksctl unlock -b /dev/sdb5 udisksctl mount -b /dev/mapper/ubuntu–vg-root Mounted /dev/dm-1 at /media/dpm/e8cf82c0-f0a3-41b3-ab28-1f9d23fcfa72 […]

Starlink starts first beta demo – world coverage by 2021
27.10.2020

  “Better Than Nothing” Starlink-Beta started across the US & Canada Starlink: amazing but and also a bit “crazy” “On 15 October 2019, the United States Federal Communications Commission submitted filings to the International Telecommunication Union on SpaceX’s behalf to […]

Freetz Alternative Firmware for Older FritzBoxes
17.08.2020

JavaScript can compromise the user’s network devices! pretty evil are devices/routers with security problems, that can be exploited from javascript. so basically opening a webpage with a browser that has javascript enabled (which most browsers have) might scan the user’s […]

Odroid H2 as ventilator cooling ventilation airmachine
13.08.2020

finally summer and climate change have both reached Europe and had several weeks of 30 C straight… without ventilation, anything above 30 is just “too much to think” (so maybe the brain CPU also would need active cooling?) of course […]